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Code transmitter especially for memorizer controller

A transmitter and memory chip technology, applied in the field of code transmitters, can solve problems such as power consumption, high power consumption, and temperature rise

Inactive Publication Date: 2008-12-31
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This power consumption is especially large at each character change, because here the change needs to be converted in the line reactance (usually mainly capacitive), so the high power consumption caused by the modulation of the transmit driver will cause the temperature to rise , and if the supply source is battery power, it will be exhausted prematurely

Method used

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  • Code transmitter especially for memorizer controller
  • Code transmitter especially for memorizer controller
  • Code transmitter especially for memorizer controller

Examples

Experimental program
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Embodiment Construction

[0017] figure 1 A memory controller 1 region is shown as the capture portion, which includes the means for generating and transmitting the control characters to one or more memory chips. The controller 1 is preferably incorporated into a semiconductor chip, and is connected to the or each memory chip during operation via a communication line formed by a plurality of connection lines.

[0018] The exact chip being controlled in each case is not shown. In the example described here, the controller 1 is designed to communicate with one or more synchronous dynamic RAM memory chips of standard design (abbreviated SDRAM), each incorporated into a separate chip and comprising multiple banks, each comprising Multiple bit data storage locations that form a row-column matrix in each row. It must be assumed here that the size and composition of the or each memory chip requires two row address bits, sixteen column address bits and eleven row address bits in order to select storage locat...

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Abstract

A code transmitter has a code word source (10) in it, said code word source (10) has n > 1 source terminal (X), and is designed to output a sequence of n-bit code words at these terminals, each n-bit The codeword is in the form of n parallel codewords and has n parallel transmission paths (20) between n source terminals (X) and n transmitting terminals (Y) for sending information represented by the codewords to a receiver . According to the invention, there is also provided a selection means (30) which explicitly indicates (S1:6) which of the n bits of each codeword are relevant to the information to be decoded in the receiver, and which according to this explicit indication , only the transmission paths among the n transmission paths (20) assigned to the relevant bits of the codeword are activated.

Description

technical field [0001] The invention concerns a code transmitter with a source of code words designed to provide a sequence of n-bit code words, each in the form of n parallel code words, as claimed in the preamble of claim 1 . A preferred but not exclusive application of the invention is a memory controller which, in addition to writing data to a memory chip, also includes means for sending instruction and address information. Background technique [0002] In many cases, communication between electronic circuit devices, eg between devices within a module or between different components in a system, takes place over multiple parallel lines. This allows individual information to be digitally encoded in a parallel format, where each information is represented by a discrete pattern and uniquely distinguishable signal states or levels on multiple lines. If "n" is the number of lines referred to herein, each pattern forms a "codeword" (also called a "symbol") of n bits, where ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/00G11C7/00
CPCH04J13/16
Inventor A·贾科布斯P·格里戈里厄斯
Owner INFINEON TECH AG